How to create safe backlinks

How to create safe backlinks. Here are some good practices

1) Do proper seo of your domain
2) Submit your domains to major search engines
3) Use social bookmarking sites like digg, delicious, reddit etc. for sharing your content of your sites
4) Also you can use Questions/Answers sites and share your Blog link as well as your website URL as reference link
5) You can also submit your blog links on some blog directory sites
6) Exchange links with other safe sites
7) Post your sites content at social media (Facebook, Google+, Twitter etc) to create social signals
8) You can create backlinks on HPR websites with DA of 30 and more than 30. Keep the content unique and for traffic you can use local area websites like local listings, classifieds and directories.